| Year | 1991 |
| 2001 |
| 2011 |
|
| Landcover Classes | Sq. Km2 | % | Sq. Km2 | % | Sq. Km2 | % |
| Guinea Savannah | 2762.01 | 41 | 2565.01 | 38 | 2449.23 | 36 |
| Derived Savannah | 2086.85 | 31 | 2185.41 | 33 | 2072.39 | 31 |
| Montane Forest | 775.28 | 12 | 822.02 | 12 | 941.11 | 14 |
| Gallery Forest | 1106.86 | 16 | 1158.56 | 17 | 1268.27 | 19 |
| Total | 6731 | 100 | 6731 | 100 | 6731 | 100 |